Search found 1034 matches

by jb
11 Jan 2021, 7:13pm
Forum: Bikes & Bits – Technical section
Topic: Bench vice without a bench
Replies: 22
Views: 940

Re: Bench vice without a bench

Not sure about his pipe bending, thought it was more for small diameter round bar or wire. However it is suitable for clamping to a work mate (to shut him up :) ) or the dining room table. I've bashed it with impunity pressed bearings in (or out) and used it as an anvil. It's been used on my tool tr...
by jb
11 Jan 2021, 4:05pm
Forum: Bikes & Bits – Technical section
Topic: Bench vice without a bench
Replies: 22
Views: 940

Re: Bench vice without a bench

You require the 'RECORD IMP'
Served me well for years.
Can also be screwed down.
imp.jpg
Record Imp (not mine but identical)
by jb
5 Jan 2021, 9:43am
Forum: Bikes & Bits – Technical section
Topic: Shimano Alfine 11 - Longer term reliability
Replies: 830
Views: 171663

Re: Shimano Alfine 11 - Longer term reliability

Don't attempt to dissemble the selector mechanism unless its broken, or unless your very brave. It doesn't go back together very easily. I doubt you would get parts for this anyway.
by jb
4 Jan 2021, 7:17pm
Forum: Bikes & Bits – Technical section
Topic: Shimano Alfine 11 - Longer term reliability
Replies: 830
Views: 171663

Re: Shimano Alfine 11 - Longer term reliability

Cant remember exactly but it wasn't a big deal. You don't need a different tool I'm fairly certain that the cone is shoved up the groove by the nut holding the selector on, you can push it some of the way. Getting it off is more difficult because everything is hidden by the clutch assembly you need ...
by jb
4 Jan 2021, 12:23pm
Forum: Bikes & Bits – Technical section
Topic: Shimano Alfine 11 - Longer term reliability
Replies: 830
Views: 171663

Re: Shimano Alfine 11 - Longer term reliability

You need tool 47 to slide through the drive side bearing and knock the axle assembly from the bearing cone, after you have removed the selector ring and the seal gubbins. Knocking the shaft end could damage the coil spring assembly from what I remember.
by jb
27 Dec 2020, 11:20pm
Forum: Bikes & Bits – Technical section
Topic: Spoke measuring
Replies: 33
Views: 1043

Re: Spoke measuring

As I said academic. I don't disagree with the theory but in practice it's not a big deal.
A spoke finishing slightly below the slot is not a game changer.

And nipples have cut threads, forcing them over an oversize shaft will cause stress that could propagate.
by jb
27 Dec 2020, 4:37pm
Forum: Bikes & Bits – Technical section
Topic: Spoke measuring
Replies: 33
Views: 1043

Re: Spoke measuring

A recent experimenter on this topic showed that it was rather academic as to whether the spoke finished slightly under the slot. And finishing slightly under the slot is a long way from exposing threads on the outside. I can't think that crunching the thread in the nipple is particularly good idea, ...
by jb
26 Dec 2020, 5:28pm
Forum: Bikes & Bits – Technical section
Topic: Carbide lamps
Replies: 24
Views: 836

Re: Carbide lamps

You could get a flamer protector for them if you wanted to be posh.
by jb
26 Dec 2020, 4:55am
Forum: Bikes & Bits – Technical section
Topic: Carbide lamps
Replies: 24
Views: 836

Re: Carbide lamps

We used carbide for caving lights because they could be recharged underground, even when we stopped using them in favour of converted Oldam lamps, I always had one at the bottom of the sack as a backup. The joke was you never got stuck if the guy behind you had an carbide lamp. I bought a proper min...
by jb
25 Dec 2020, 10:21pm
Forum: Does anyone know … ?
Topic: Booze cruises
Replies: 31
Views: 1688

Re: Booze cruises

We were still in the EU then. How can we return to it when we're not anything to do with them?
by jb
23 Dec 2020, 1:24pm
Forum: Does anyone know … ?
Topic: Memories of the Dawes Galaxy
Replies: 60
Views: 3464

Re: Memories of the Dawes Galaxy

I think the Galaxy & Supper Galaxy lost their magic with me when the frame building went abroad. The tubes went from being slender and elegant to fat and gobby. Then the fork crown changed from a beautiful brazed lugged casting to that god awful bent tube welded design that should have any self ...
by jb
23 Dec 2020, 12:56pm
Forum: Bikes & Bits – Technical section
Topic: How long do chains & sprockets last ?
Replies: 101
Views: 2990

Re: How long do chains & sprockets last ?

In addition; calculating backwards if there was zero roller wear when the CC-3 tool was indicating a 1% chain wear the chain would actually be 0.64% worn. I think if this gauge wanted to give a real indication of between 0.75% & 1% wear (assuming an average roller wear rate) it should be a whole...
by jb
23 Dec 2020, 10:42am
Forum: Bikes & Bits – Technical section
Topic: Spoke measuring
Replies: 33
Views: 1043

Re: Spoke measuring

fausto99 wrote:I would advise that you measure the ERD yourself. I've not found published data to be reliable.


Absolutely, The figures supplied are what they consider to be the ERD which might be different to your preferred amount of spoke in nipple finish, also rims of the same type can differ slightly.
by jb
22 Dec 2020, 5:23pm
Forum: Bikes & Bits – Technical section
Topic: Ball bearings must be expensive, then...?
Replies: 23
Views: 1473

Re: Ball bearings must be expensive, then...?

I had a Maillard block once that had well spaced out balls (and it wasn't even the sixties). It seems eminently sensible to have the ratchet running on a hard bush rather then having ball races especially for kids bikes. Friction isn't a big priority in a free wheel so long as it does actually turn....
by jb
22 Dec 2020, 10:05am
Forum: Bikes & Bits – Technical section
Topic: What chainring and rear cog for Rohloff?
Replies: 94
Views: 2975

Re: What chainring and rear cog for Rohloff?

Actually a 50t chainring with a 16t sprocket gives you a 22 ins gear which is low enough for anybody on the road, and a top gear of 120 22 isn't low enough for me and I'd find a 120 redundant. Why not let people decide for themselves what gearing they want? People can have whatever they want its ju...